mup meteor debug doesn't work with docker networks

[Slind14]

Hi Zodern,

I noticed that the new mup meteor debug only works when exposing the port with:

    docker: {
      args: [
         "-p 0.0.0.0:9229:9228/tcp",
      ],
      networks: ["customNetwork"],
      [...]
    }

Otherwise, the meteor-debug container doesn't seem to be able to gain access to the port. I think this is related to the use of networks. Would it be possible to add support for networks?

Ref: #1122